1 Introduction

The Low Dropout (LDO) regulator regulates a higher input voltage to a lower output voltage, similar to a switching regulator. Unlike the switching regulator, an LDO works as a noise filter device and shows to be much simpler to implement in modern designs. To learn more about how an LDO operates, refer to the Learn the Basics of Linear and Low Drop-Out Regulators (LDOs) video. With the increasing demand for low-noise parts in high-frequency power system applications, the LDO plays a significant role in meeting demand. The result of fulfilling this role means that more basic measurements are taken for debug purposes, and understanding how to make proper high-quality measurements becomes increasingly important. Taking measurements can be a challenging task, pay close attention to hardware setup and device configuration before taking a measurement. Typical measurements include, but are not limited to, load transients, line transients, short-circuit tests, and brownouts.